Strainer.



PATBNTED SEPT. 29, 1903.

F. G. BROWN.- STRAINER. APPLIGATION FILED JAN. 5. 1903.

H0 MODEL.

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Patented September- 29, I903,

PATENT OFFICE.

FRANCIS GROVER BROWN, OF SHEFFIELD, ALABAMA..

STRAINER.

SPECIFICATION forming part of Letters Patent No. 740,225, datedSeptember 29, 1903.

Application filed January 5, 1903. Serial No. 137,864. (No modeld To allwhom it may concern:

Be it known that I, FRANCIS GRovER BROWN, a citizen of the UnitedStates, and a for straining water or other liquid flowing through thepipe-line to prevent trash or other extraneous matter from passing withthe feedwater into the boiler or, other apparatus.

The invention consists of novel features and parts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claims.

Reference is to be had to the accompanying drawing, forming a part ofthis specification, in which the figure is a sectional side elevation ofthe improvement.

The strainer-casing A is attached to the pipe-line by pipes B B and isprovided with an inlet-chamber 0, connected with theinletpipe B, andwith an outlet-chamber D, connected with the outlet-pipe B. In the topof the outlet-chamber D is screwed or otherwise secured a strainer E,preferably in the form of a tubular plug, closed at the upper end andextending at its lower openiend snugly through an aperture A, formed ina partition A separating the chambers O and D from each other. Theloweropen end of the strainer E is thus open to the water or otherliquid in the inlet-chamber G, and the perforated side wall of the saidstrainer has its perforations E opening into the outlet-chamber D. Thusliquid flowing through the pipe-line in the direction of the arrowspassesfrom the pipe B into the chamber 0, then into the strainer E andthrough the perforations E thereof into the outlet-chamber D, from whichthe liquid flows through the pipe B of the pipe-line to the injector orinto the boiler directly, as the case may be. 7

Now trash and other extraneous matter flowing with the liquid into thechamber C and strainer E are retained by the latter and can settle inthe apertured bottom 0 of the chamber 0 to be discharged from the samefrom time to time through a valve-seat C and valve F into a dischargenipple or elbow F,

screwing on an externally-threaded boss C normally hold the valve Ffirmly to its seat Now it will be seen that by screwing the nipple F upor down on the boss (3 the tensionof the spring F is regulated, so as topress the valve F with more or less force against its seat 0 After thetension of the spring F is adjusted as described, then the nipple F isfastened in place by the jam-nut G. When it is desired to cleanse thestrainer E and the chamber C of the trash previously collected, thensteam is passed through the pipe B into the chamber D to pass throughthe perforations E inwardly into the strainer E, thus loosening anytrash or other extraneous matter which may have gathered in the interiorof the strainer E. At the'same time the steam,

with the trash from the strainer E, passes into the chamber 0 andpresses on the valve F to finally open the same and cause the trash andother extraneous matter to be discharged through the valve-seat C andnipple F to the outside.

In the pipe-line and at the entrance side of the strainer-casin g A isarranged a valve-body H, connected, as shown, with the pipe B and thepipe B of the pipe-line, and the said valve body H is provided with avalve-seat H, on which is seated a check-valve I, formed on its top witha recess 1, into which projects the lower end J of a screw-rod J,screwing in a stoning-box K, attached to the upper portion of thevalve-body H. The end J of the screwrod J limits the upward slidingmovement of the check-valve I; but whenthe strainer E is cleansed oftrash and other extraneous matter by the use of steam, as abovedescribed, then the valve 1 is held firmly to its seat by the pressureof the steam; but, if desired, the screw-rod J may be screwed downward,so as to engage the bottom of the recess I, and thereby lock the valve Ifirmly on its seat H. From the bottom of the recess 1 leads an opening Jto the under side of the check- I valve 1, so that steam can passthrough the recess 1 and the said opening J to the pipe B to keep thesame from freezing during cold weather.

It is understood that when it is desired to remove the strainer from thepipes B and B of the pipe-line then the screw-rod J is screwed down tohold the valve I to its seat and also to close the opening J to preventwater from passing through the check-valve H to the pipe B.

It is understood that the strainer E and the inlet-chamber O can becleansed of trash or other extraneous matter by return waterpressurepassing from the pipe B into the chamber D; but in this case it isdesirable to lock the valve 1 firmly to its seat by the screwrod J andto close the opening J so that the water-pressure in the pipe-line atthe pipe B can force water through the check-valve to the pipe B.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A pipe-line attachment comprising a strainer-casingin the pipe-line and containingast-rainer, and a spring-presseddischargevalvein the casing, on the inlet side thereof, as set forth.

2. A pipe line attachment comprising a strainer-casing in the pipe-line,a strainer in the said casing, a springpressed dischargevalve in thecasing on the inlet side thereof, and a check-valve in the pipe-line, onthe inlet side of the casing, as set forth.

3. A pipe-line attachment, comprising a .strainer interposed in the linebetween its inlet end and its outlet end, and a relief-valve in saidline between said-strainer and the inlet end of the pipe, as set forth.

4. A pipe-line attachment having a casing in the pipe-line and providedwith an inletohamber, an outlet-chamber, a strainer exopening into theinlet-chamber and the perforations in its side wall opening into theoutlet-chamber, a spring-pressed discharge-valve in the bottom of theinlet-chamber, and a check-valve in the pipe-line, on the inlet side ofthe said inlet-chamber, as set forth.

6. A pipe-line provided with a strainercasing, a strainer therein, and aspring pressed discharge-valve for the said casing, having its valvebody adjusted on the strainer-casing, to regulate the tension of thespring of the valve, as set forth.

7. A pipe-line provided with a strainercasing having an inlet-chamber,an outletchamber, a strainer extending in the casing and having its openend opening into the said inletchamber and the perforations in its sidewall opening into the outlet-chamber, a valve closing the valve-seat inthe bottom of the said inlet-chamber, a nipple in which the valve ismounted to slide, a spring pressing the said valve against its seat, andmeans for holding the nipple adjustably on the valvecasing, to regulatethe tension of the said spring, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANCIS GROVER BROWN.

